Shoe-clasp



"(No Model.)

D. DRUMMOND. Shoe Clasp.

No. 230,759; Patented Aug. 3,1880.

$225M? M M ILPEI'ERS, PNOTO-LITMQGRAPHER. WASHINGTON o C UNITED STATESPATENT OFFIcE.

DAVID DRUMMOND, OF DUBUQUE, IOWA.

.SHOE-CLASP.

SPECIFICATION forming part of Letters Patent No. 230,759, dated August3, 1880,

Application filed April 6, 1880.

To all whom it may concern:

Be it known that I, DAVID DRUMMOND, a citizen of the United States,residing at Dubuque, in the county of Dubuque and State of Iowa, haveinvented certain new and useful Improvements in Shoe-Clasps; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit ap pertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthere on, which form a part of this specification.

My invention relates to shoe buckles or clasps; and it consists of aplate or rosette, having a smooth or irregular spiral groove on oneside, fastened to and revolving upon a plate attached to one flap of theshoe. To the opposite flap of the shoe is attached a plate having one ormore teeth or broad books, that engage with the spiral groove of therosette. By revolving the rosette to the right or the left, while thetoothed plate is engaged with the spiral groove thereof, the shoe isclasped or unelasped.

In the accompanying drawings, Figure 1 is a top view of my improvedclasp, represented upon a shoe. Fig. 2 is a vertical section thereof.Fig. 3 is a view of the under side of the rosette, showing the spiralgroove therein. Fig. 4 is a modified form, showing the spiral with abroken thread, the same being stamped from sheet metal.

In constructing my shoe-clasp the rosette or plate A may be made of anysuitable material and form; but I prefer to make it round and ornamentedat pleasure. ()n the under side of the rosette is a spiral groove, slot,or lip, (seen at a, Fig. 3.) This spiral may have either a smooth or abroken thread, and the (No model.)

curve thereof may be regular or irregular, with angles to prevent thehooks from slipping round the spiral, and thus unwinding the fasteningafter bein screwed up tight. This resette has a pair of hooks, B,pivoted centrally thereto. These hooks are to be attached to one of theflaps of the shoe, and then the rosette turns freely on the pivot. Onthe opposite fiap of the shoe is attached the plate D, Fig. 1, having aseries of blunt hooks which engage with the spiral thread of therosette.

The operation of my improved clasp is as follows: The rosette is broughtover the plate D, Fig. 2, and engaged therewith, the hookD catching thespiral groove in the rosette, which is then revolved to tighten theclasp. by reversing the revolution of the rosette the clasp is loosened.

I do not limit myself to the precise form of the hooks, or the method ofattaching the clasp to the shoe. I prefer to use sheet metal and stampthe hooks out by dies.

The rosette may be either molded or stamped, or made of hard rubber orother suitable material, the more ornamental the better.

Having described my invention, what I claim is-- The rosette A and hookB, pivoted together, the rosette being provided with the spiral grooveor lip a, in combination with the hook I), all adapted to operatetogether in clasping and unclasping a shoe, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID DRUMMOND.

Witnesses:

H. S. RAYMOND, WM. K. JONES.

Then

